Lijekove su mjerili rukom ili vagali utezima. Prirodna mjera rukom bila je jedna šaka ili jedan iščupak.
Jedinica za vaganje bila je krišnala odnosno crveno zrno biljke abrus – Abrus precatorius.
Jedno srednje-veliko i osušeno zrno abrusa težilo je koliko tri srednjevelika zrna ječma.
Jedno zrno ječma bilo je 6 zrna bijele gorušice (Sinapis alba).
Dvanaest zrna krišnala težilo je jedan današnji gram. Dakle, jedan krišnal (jedno zrno abrusa) vagalo je približno 0,083 grama.

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Medicines were measured by hand or weighed with weights. The natural hand measure was one hand or one pluck.
The unit for weighing was the krishnal, i.e. the red grain of the rosary pea plant – Abrus precatorius.
One medium-sized and dried grain of cloth weighed as much as three medium-sized grains of barley.
One grain of barley was 6 grains of white mustard (Sinapis alba).
Twelve grains of krishnal weighed one today's gram. So, one krishnal (one rosary pea seed) weighed approximately 0.083 grams.